Tractor implement



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3 PM o-PM V Patented May 1, 1945 Carl ,W. Mott, La Grange, lll.,assignor to International Harvester Company, a corporation of New JerseyOriginal application February 23, 1940, Serial No. 320,462. Divided andthis application Septemher 23, 1943, Serial No. 503,483

GClaims. (Cl. 97 4 7) This invention relates to tractor implements andmore particularly to a type of implement for small tractors. Thisapplication is a division of a joint application Serial No. 320,462,filed February 23, 1940. for Tractor implements, in the names of AlexusC. Lindgren and Carl W. Mott, now Patent No. 2,352,276 issued June 27,1944.

It is an object of this invention to provide an arrangement for theconnection of an implement to a small tractor whereby plow furrows canbe made with the same spacing as with implements connected to large sizetractors.

It is another object of the invention to provide, in such an implementadapted for small size tractors, means for laterally shifting theworking tool beam and its ground working tool from one side of a neutralposition to another side of a neutral position, depending upon theparticular rear wheel of the tractor that may be running either in theplowed furrow or the wheel nearest to the plowed land.

It is still another object of the invention to Provide means included inthe means for laterally adjusting the tool beam with respect to thetractor, whereby the forward portion of this beam will be automaticallyadjusted with the rear portion of the beam by means reactingautomatically against the tractor.

It is still another and important object of the invention to provide inthe supporting means an arrangement of its parts whereby leveling of theplow may be effected automatically with the lateral shifting of theplow, beam and its plow.

For a better understanding of the invention, reference may be had to thefollowing description taken in connection with the accompanyingdrawings, in which:

Figure 1 is a view in elevation of a tractor with the implement of thepresent invention attached thereto; I

Figure 2 is a plan view of the tractor and the implement:

Figure 3 is a rear view of the tractor and implement, the tractor havingits wheels adjusted to a wide setting with one of the same running in afurrow and the implement laterally adjusted away from the wheel runningin the furrow;

Figure 4 is a similar rear view of thetractor and implement, the tractorhaving its wheels set tion of the rotatable member with the rear axlehousing of the tractor.

Referring now particularly to Figures 1 and 2,

there is shown a tractor of the type disclosed in U. S; Patent No.2,221,546, issued November 12,

1940, in the names of Edward A. Johnston and- Alexus C. Lindgren. Thistractor is of small size and arranged with its power plant I!) andlongitudinally extending body portion ll located at line. The rearwheels l3 of this tractor are so constructed and so connected to therear axle structure I! that they may be reversed to have a wide setting,as shown in Figure 3, or arranged to have the narrow setting, as shownin Figure 4. To the forward portion of the tractor there is connected adepending supporting structure l5 comprising, in general, a pair ofdownwardly and rearwardly extending members l6 and I1 connected to thetractor at IS, a second pair of downwardly and forwardly extendingmembers l9 and 20 connected to the tractor at 2 I, and a shaft 22interconnecting all four of said depending members at their lower ends.The shaft 22 provides means for connecting the forward end of a toolbeam 23 to the depending structure l5 for pivotal and lateraladjustment.

On the rear of the tractor, Figs. 3 and 4, there are two verticallyextending support members 24 and 25 held, respectively, in their uprightposition by brace members 26, Figs. 1 and 2, extending forwardly on thetop portion of the rear axle structure and connected thereto at 21. Withthese brace members so connected, the vertical members 24 and 25 areheld rigidl'y to provide a support for a rock-shaft 28 therebetween,which ,is adapted to be rocked by a hand lever 29 located forwardlyofthe onerators station l2 and conin a narrow setting with the implementin its Figure 6 is a view similar to Figure 5, showing the forwardportion of the implement beam shifted to ,one side of a neutralposition; and

Figure 7 is a detail view, showing the connecnected to an arm 30 on therock-shaft 28 by a thrust means in the form at a link 3|. The lever 29has the usual latch mechanism 32 adapted to cooperate with a quadrant33, and, upon the lever being pulled rearwardly, the rock-shaft will berotated in a clockwise direction, as viewed in Figure 1, to effectvertical movement of arms 34 and 35 rigidly connected with therock-shaft and extending rearwardly thereof.

To the rear ends of the arms 34 and 35 there are pivotally connected ona transverse axis, respectively, the trunnion blocks 36 and 31, to thetrunnions on each of which there are connected connected a transversemember 40, which is rigidly connected with the rear portion of the plowbeam23 at 4|. These pairs of links permit lateral swingable adjustmentof the beam structure 23 with respect to the tractor. In order to effectthis lateral adjustment'there is provided, see Figures 3 and 4). adiagonally disposed thrust member 42 connected at one end to the lowerend of the swinging links 38 at their point of connection with themember 48. The opposite end of the thrust member 82 is formed to providea segment portion 43, about which a lever 44 may be adjusted. This lever48 has a reversed portion 45 at its lower end pivotally connected to thepoint of connection of the links 39 with the trunnion 31 and alsopivotally connected at 46 to the thrust member 42. An adjustment of thislever 44 about the quadrant 43 to one side or to the other side of aneutral position 41, will effect lateral adjustment of the tool beam toone side or to the other side of its neutral position. The lever I, whenmoved to a position 48, efiects movement of the beam to the left, asviewed in Figures 3 and 4, and away from the rear tractor wheel runningclosest to the plowed land, or, as in the case of Figure 3. running in afurrow. Adjustment of the lever 44 to a position 49 will effect lateraladjustment of the plow beam 23 away from the opposite wheel, which willbe operating nearest to the plowed ground or in the furrow upon thereturn travel of the tractor across the field being plowed. It shouldnow be apparent that means is provided for supporting the rear portionof the plow beam 23 from the rear axle structure ll of the tractor insuch a manner that lateral adjustment of the same may be efl'ected andthat manual means including the lever ll may be used for accomplishingthis result.

In Figure 3, there are shown the wheels l3 arranged in the wide settingand the wheel at the to provide the proper amount of levelingfor thenormal furrow depth. As the tractor is turned about at the end of thefield to proceed across the field with the opposite-rear wheel in thefurrow and with the plow 5| shifted away from that, wheel, the links 38would then become vertical and the links 39 would be angled rightrunning in a previously plowed furrow 90,

the plowing being accomplished by means of a middle buster plow 8|carried by therear portion of the beam 23 where the dirt is thrown inboth directions to form a ridge portion 52. With the small type tractorsthe wheels l3, when set in their wide setting, are spaced 68 inches,whereas. if the plow was to be set centrally of the tractor, the onlyfurrow spacing that could be accomplished would be half of the 68inches, or 34 inches. With the larger tractors, it has been customary tohave furrow spacings of amounts greater than 34 inches. Therefore, inorder to provide for a larger furrow spacing for small tractors, theprovision for laterally adjusting the plows is herewith made. By beingable to adjust the plow laterally away from the tractor wheel running inthe furrow, a greater furrow spacing may be had. With the structureshown it is possible to shift the plow two inches or so away from itscenter position, thereby permitting a furrow spacing of 36 inches.

I In order to provide a means for effecting. leveling of the plowautomatically with the lateral adjustment of the plow, the links 38 and39 are connected, as shown in Figure 3. with the transverse member 48,so that, when the plow is centrally located, these links will convergedownwardly. As 'the plow beam is adjusted by the manual lever 44 to aposition away from the wheel l3 traveling in the furrow 50, the links 39will tend to become vertical while the links 38 will tend to have agreater angle with the vertical. The result is that the side of the plowfarthest from the furrow wheel I3 is lowered while the side of the plownearest to the furrow wheel I3 is raised, thereby effecting automaticleveling adjustment of the plow 5|. The lengths of the links withrelation to the tractor and to the plow beam are such as to a greaterdegree with they vertical. Thus, it

should be seen that, by having such downwardly converging links,automatic tilting can be effected irrespective of the particular rearwheel running in the furrow. Where furrow spacings of more or less than36 inches are desired, this may be accomplished by running the furrowwheel of the tractor to one side or the other of the center of thefurrow, the wheel hugging close to one wall or the other of the furrow.

Where greater furrow spacings are desired than that accomplished withthe arrangement shown in Figure 3, the tractor wheels II are set attheir narrow settings, so that both wheels are run on the unplowedground. The wheel l3 nearest to the plowed ground may travel close orremoved from the edge wall of the previously formed furrow. Since bothwheels, as shown in Figure 4, are running on the unplowed ground, it isnot necessary to provide for automatic tilting of the plow 5| when it islaterally adjusted. Therefore, the swingable links 38 and 39 arearranged to be vertical in the neutral position shown in Figure 4, andare angled alike when the plow is laterally adjusted. In other words,th: lower ends of the swingable links 38 and 39, instead of beingconnected to the transverse member 40 at 53 and 54, respectively, areconnected at 55 and 56, respectively. With this arrangement, as shown inFigure 4, furrow row spacings up to 42 inches may be had.

In order to insure that there will be a lateral adjustment of theforward portion of the beam 23 with respect to the rod 22, there hasbeen provided means adapted to react against the tractor so that theforward portion will be automatically adjusted laterally upon thelateral adjustment effected by the manual lever N. This means comprisesa rotatable member 51 carried on the beam and held on the top thereof inrotatable relationship by means of straps 58 and 59. This member hasupturned at each end, respectively, arms 60 and 6|. The arm 60 isadapted to cooperate with a transverse member 62 of the dependingstructure l5. When the beam 23 is centrally located in a neutralposition, as shown in Figure 5, the arm is vertical, being connected ata point 63 centrally of the depending structure l5. The arm 6| at therear end is connected by means of a jockey link '64 to a dependinghousing 65 of the rear axle structure ll. By the connection of the arms60 and GI, respectively, with the depending structure l5 and with thedepending housing 65, it should be seen that lateral movement willautomatically be given to the forward portion of the beam 23 as the rearportion of the beam is adjusted by the manual lever 44. The jockey link64 provides for up and down movement of the beam about its pivotalconnection with the rod 22 as the beam is lifted or adjusted totransport position on the tractor.

The thrust means 3| connecting the lever 29 with the arm 30 of therock-shaft 28 includes telescoping parts 66 and 66'. These telescopingparts have lost motion in order to permit the plow to raise verticallyduring its operation due to unevenness of the ground. This lost motion itaken up upon operating the lever 29 to effect lifting of the plow totransport position. To assist in the lifting operation, there isprovided a helper spring 61 anchored to, the tractor at 68 and may beconnected to the lever 29 at a variety of locations 69. The plow depthmay be adjusted by the lever 29 by the setting of the same at anylocation on the quadrant 33, but ,as the lever is pulled back to itsfull extent on the quadrant the plow bottom is lifted to its fullextent.

In order to provide greater or less lateral throw of the arm 6| withrespect to the depending housing 65, the jockey link 64 may be connectedto the depending housing 65 in any one Or more of the holes 10. Theadjustment of thislink 64 in these holes will thereby change the pointof reaction on the tractor. As shown in Figure 6, the forward portion ofthe beam will be thrown so that the arm 60 is at an angle to the rightor left of the location of the same, as shown in Figure 5. The links 38and 39 respectively have hole means II and 12 whereby the transversemember 40 may be given a vertical adjustment with respect to the arms ofthe rock-shaft, thereby in effect shortening the length of the links 38and 39. This adjustment is convenient when the middle busters are beingused to open previously formed ridges, since when opening previouslyformed ridges both wheels will run in the previously formed furrows.

It should now be apparent from the foregoing that a plow structure hasbeen provided for small tractors whereby the same furrow spacings may behad as with tractors of larger size. In being able to laterally adjustthe tractor wheels between narrow and wide settings and by being able tolaterally adjust the plow beam to}: one side or the other of neutralposition, this has been accomplished.

While various changes may be made in the detail construction of thisinvention, it should be understood that such changes shall be within thespirit and scope of the present invention as defined by the appendedclaims.

What is claimed is:

1. In combination, a tractor, a longitudinally extending plow beamhaving a first portion connected to the tractor for lateral adjustment,means for supporting a second portion of the beam, spaced longitudinallythereof from the first portion, on the tractor for lateral adjustment,said beam thereby being in its entirety directly connected to thetractor for bodily lateral adjustment, manual means for laterallyadjusting the second portion of the beam, and means associated with anintermediate beam portion and reacting against the tractor forpositively eifecting lateral adjustment or the first beam portionpursuant to such lateral adjustment of the second beam portion.

2. In combination, a tractor, a longitudinally extending plow beamconnected to the tractor.

for lateral adjustment at one location thereon, means for supporting thebeam at another location on the tractor for lateral adjustment, manualmeans for laterally adjusting the beam with respect to the tractor atone location, and means associated with the beam and reacting agairstthe tractor for positively effectinglateraladjintmentoithebeam'atitsotherloestion upon operation of saidmanual adjusting means, and means for varying the vertical location ofthe point of reaction of said positive means with respect to thetractor.

3. In combination, a tractor, a longitudinally extending plow beamconnected to the tractor at one location thereon for pivotal and lateraladjustment, lifting means at another location on the tractor includinglaterally swingable adjustable links connected with the plow beamremoved from its connection with the tractor at said first location,manual means for swingably adjusting said links whereby the plow beamwill be laterally adjusted, means associated with the beam and reactingagainst the tractor for positively effecting lateral adjustment of thebeam at its connection with the tractor upon operation of said manualmeans, and means for operating the lifting means to effect pivotaladjustment of said beam.

4. In combination, a tractor having rear axle structure, alongitudinally extending plow beam connected to the tractor head of therear axle structure for lateral movement, means for supporting the beamfrom the rear axle structure for lateral adjustment, said beam therebybeing in its entirety directly connected to the tractor for bodily andlateral adjustment, manual means for laterally adjusting the said lattersupporting means to laterally move the beam, and means associated withthe beam and reacting against the tractor for positively effectinglateral movement of the beam with respect to its connection with thetractor ahead of the rear axle structure upon lateral adjustment of thesupporting means.

5. In combination, a tractor, a longitudinally extending plow beamhaving a plow thereon connected to the tractor for vertically pivotaland lateral adjustment at one location thereon, means for supporting thebeam at another location on the tractor for lateral adjustment, meansfor laterally adjusting the beam associated with said supporting means,means associated with the beam and reacting against the tractor forpositively efiecting lateral adjustment of the beam at its firstlocation on the tractor, means associated with said supporting means toeffect vertical adjustment thereof to adjust the working depth of theplow, and means for varying the vertical location of the reaction pointof said positive means on the tractor.

6. In combination, a tractor having a rear axle structure, a tool beamconnected to the tractor for lateral adjustment at a location ahead ofthe rear axle structure and extending longitudinally rearwardly to alocation in rear of the rear axle structure, a ground working toolcarried by the rear end of said beam, mean for supporting the beam onthe rear axle structure for lateral adjustment, manual means forlaterally adjusting the rear position of the plow beam through its rearsupporting means, a member carried for rotation on the beam andextending from the point of connection of the beam ahead of the rearaxle structure to a point adjacent the rear axle structure, said memberterminating with projected arms and said arms associated with thetractor to react thereagainst for lateral adjustment of the forwardportion of the beam automatically with adjustment of the rear portion ofthe beam.

CARL W. uo'rr.

